100565505066001 has 4 divisors (see below), whose sum is σ = 100566132972004. Its totient is φ = 100564877160000.

The previous prime is 100565505065929. The next prime is 100565505066007. The reversal of 100565505066001 is 100660505565001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51251066230225 + 49314438835776 = 7158985^2 + 7022424^2 .

It is a cyclic number.

It is not a de Polignac number, because 100565505066001 - 2¹⁵ = 100565505033233 is a prime.

It is a super-2 number, since 2×100565505066001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100565505066007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313712700 + ... + 314033101.

It is an arithmetic number, because the mean of its divisors is an integer number (25141533243001).

Almost surely, 2^{100565505066001} is an apocalyptic number.

It is an amenable number.

100565505066001 is a deficient number, since it is larger than the sum of its proper divisors (627906003).

100565505066001 is an equidigital number, since it uses as much as digits as its factorization.

100565505066001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627906002.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 100565505066001 in words is "one hundred trillion, five hundred sixty-five billion, five hundred five million, sixty-six thousand, one".